Shifting register unit and driving method, grid driving circuit and display device

Abstract

An embodiment of the invention provides a shifting register unit and a driving method, a grid driving circuit and a display device. Size of a display panel is decreased and power consumption of the display panel is reduced. The shifting register unit comprises an input module, a resetting module, an output module, a pull-down control module and a pull-down module, wherein the output module is used for responding to voltage signals of a first node and providing second clock signals and third clock signals to an output terminal, the pull-down control module is used for responding to the first clock signals, the second clock signals and the resetting signals, providing the first clock signals to a second node, and responding to the voltage signals of the first node to supply low-level voltage signals to the second node, and the pull-down module is used for responding to the voltage signals of the second node and the first clock signals and providing the low-level voltage signals to the first node and the output terminal, wherein the duty ratio of the first clock signals, the second clock signals and the third clock signals is 1 / 3 respectively.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a shift register unit and a driving method, a gate driving circuit and a display device. Background technique [0002] The thin film transistor liquid crystal display (TFT-LCD) driver mainly includes a gate drive circuit and a data drive circuit. The gate drive circuit converts the input clock signal through a shift register unit and adds it to the gate line of the liquid crystal display panel. The pole driving circuit can be formed with the same process as the TFT and formed on the LCD panel simultaneously with the TFT. The gate driving circuit includes a shift register unit with multiple stages, and each stage is connected to a corresponding gate line to output a gate driving signal. The stages of the gate drive circuit are connected to each other, the start signal is input to the first stage of the stages and the gate drive signal is sequentially output to the gate ...

AI Technical Summary

Problems solved by technology

figure 1 The shift register unit shown, including 10 thin film transistors and 1 capacitor, is used to realize the output and reset functions of the shift register unit; at the same time, it eliminates the interference noise caused by the change of each AC clock signal in the gate drive circuit , improve the output of the signal and the stability of the shift register unit; however, more thin film transistors require a larger wiring space, making the size of the entire shift register unit larger, and because each shift register unit corresponds to a row of gates The output of the line scan signal, therefore, the gate drive circuit needs to occupy a large space, which leads to a large volume of the liquid crystal display, which is not conducive to the narrow frame design of the display panel; moreover, a large number of thin film transistors will also cause displacement The power consumption of registers is high, which in turn leads to high power consumption of the entire display panel

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